JPH03504818A - Use of organophilic clays to separate the oil phase from oil-in-water suspensions - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Type 1. Sex to get rid of turbidity? Lz two branch friends The present invention provides oil-in-water type suspensions, i.e. water or water-soluble suspensions. As an agent for separating the organic phase from a suspension in which organic substances are suspended in the liquid. Concerning the use of organophilic clays.

In various industrial processes, in the removal of various organic impurities, and in numerous In the washing process, a suspension of water-insoluble organic substances in an aqueous phase is obtained. and the organic phase is in the form of particulates in the suspension and also in the form of a colloid. There are many cases. Separation of the suspension is extremely difficult.

One example of a suspension of an organic phase in an aqueous phase as described above is used in the paint processing industry. The atomized paint is removed from the waste air coming out of the spray room. This is an aqueous cleaning solution obtained when removing by washing with. Especially when it comes to car paint. In this case, the mixture of paint is The paint mist is removed from the exhaust air by washing it off with water. removed. Water used to wash out paint mist Because it is circulated.

The result is an increasingly thick aqueous paint suspension, which Detackify or coagulate It is necessary to For this purpose, the above paints are modified, i.e. coagulated. Alkaline compounds are already used (JUgenGeke rModer nProdukte und Verfahren zur Koagula tion (Modern coagulation products and methods), 0berf15che (surface) + JOT, 1986. H, pp. 43-46].

In addition, West German Patent Application No. 3421270 describes a paint mist wet separator. Among these are waxes, wax-like plastics and plastic dispersions, and enamels. Underbody protective paint based on resin coating agent ion) obtained from marble to precipitate, make it non-adhesive and coagulate it. It is stated that an aqueous suspension of hydrated lime can be used.

European Patent Application No. 0187028 discloses that A method for detackifying and separating spray fluids is described, in which a major amount of (predominant A+1 mount) hectorite and a small amount of diluent It is described that an aqueous slurry containing . Yet again. The above suspension contains water-soluble polyphosphate, alumina, montmorillona Itoclay and antifoaming agents may also be included.

Also, a vent solution is used to coagulate and make non-tacky aqueous paint suspensions of the type described above. It was also known that itocray could be used [H, Kohler, rFach broschOreOberflMchentechnik (related to surface technology) 5/85. pp. 65-69].

Until now, it has been used to make coatings and paints in aqueous suspensions non-tacky and coagulate. What clay is used?

A hydrophilic inorganic compound that is added to an aqueous suspension in the form of an aqueous slurry. It will be done. However, the separation effect obtained with this method is ultimately insufficient, and furthermore, The addition of the hydrophilic clays that swell in the aqueous phase causes an undesirable increase in the viscosity of the aqueous phase. do.

It is therefore an object of the present invention to develop an adsorbent for the separation of organic phases from oil-in-water suspensions. In particular, suspensions of coatings and paints in aqueous cleaning solutions, An adsorbent for separating and detackifying the aqueous phase, which removes undesirable viscosity To provide an adsorbent that achieves effective and complete separation without causing There is a particular thing.

According to the present invention, it is useful as an adsorbent for separating organic phases from oil-in-water suspensions. By using organophilic clay, The following objectives will be achieved.

The purely inorganic clays used in the prior art are hydrophilic and yet compatible with aqueous media. It has good suspending ability and swelling ability. Therefore, is it a water-based coating solution? The action of the above inorganic clays when used as adsorbents to separate organic phases from is easy to understand; on the other hand, the organophilic clay used in the present invention, which is also water repellent, is , because it does not swell in water and has a tendency to immediately settle in the aqueous phase. , organophilic clays are superior in suspensions of organic phases, e.g. paints, in aqueous media. It is unexpected that it exhibits an adsorption effect and does not cause an increase in viscosity in the aqueous medium. Was that.

The organophilic clay used in the present invention is at least 75 mm/100 g of clay. Smectite-type clays and organic cationic compounds with a cation exchange capacity of is the reaction product of

The clay used as a starting material for the production of the above organophilic clay is smectite. clay containing at least 75 milliequivalents of cations per 100 g of clay. It is a clay with a large exchange capacity. A particularly convenient clay is Wyoming (W natural types of swellable bentonite and similar clays produced in Hectorite is a swellable magnesium lithium silicate clay.

The cation exchange capacity of the above smectite clay is based on the known ammonium acetate It can be measured by the method. Clays used as yK materials, especially bentonite type clays converts to the sodium form unless it is already in the sodium form. Conveniently, this conversion to the sodium form is done by preparing an aqueous slurry of the clay.

By passing this clay slurry through a bed layer of sodium-type cation exchange resin, It is convenient to do so.

In another method, the clay is mixed with water and then a water-soluble sodium compound, e.g. For example, add sodium charcoal, sodium aqueous solution, etc., and then mix the mixture in a clay kneader ( pug+*1ll) or subjected to shearing in an extruder.

Smectite-type naturally occurring clay or pneumatic synthesis method or is preferably produced either by hydrothermal synthesis Synthetic clays can also be used to prepare the organophilic clays used in the present invention.

Typical examples of such materials include montmorillonite, bentonite, and hectonite. 0-synthetic resins with night, beidellite, sabonite and stevensite are .

Mixed hydrated oxides or hydrates of the desired metals and, if desired, the desired specific synthesis The amount of sodium in the form of fluoride (or other exchangeable cation or mixture of cations) in the form of a slurry. The slurry can be produced by hydrothermal synthesis using temperature in the range of about 100-325°C, preferably 274-300°C under autogenous pressure. Heat to a temperature sufficient for a sufficient time to produce the desired product.

The production of organically modified or modified clays, i.e. organophilic clays. Organic cationic compounds suitable for clays are those that can exchange cations with smectite-type clays. Ru. Therefore, one can choose from a wide range of compounds that cause the formation of organophilic clays. Yes A highly cationic compound is one that is localized on one atom or small group of atoms within the compound. This organic cationic compound must have a positive charge of quaternary Ammonium salts and phosphonium salts and mixtures of these onium compounds and It is preferable to choose from the corresponding salts.

Said organic cations can be linear or branched having 12 to 22 carbon atoms. Ammonium cations containing at least one saturated or unsaturated alkyl group are preferred. Delicious. The remaining groups of the above cations are (a) straight chain having from 1 to 22 carbon atoms; or branched alkyl group; (b) an aralkyl group, the aralkyl structure a straight-chain or branched fused ring having 1 to 22 carbon atoms in the alkyl moiety of an aralkyl group in which a benzyl moiety or a substituted benzyl moiety is present: (C) aryl groups such as phenyl groups, and substituted phenyl groups containing fused ring aromatic substituents; ( d) β, γ unsaturated groups having 6 or fewer carbon atoms or from 2 to 6 a hydroxyalkyl group having carbon atoms; and (e) a hydrogen atom.

The long chain alkyl groups mentioned above can be used in various vegetable oils such as corn oil, coconut oil, soybean oil, cotton oil, etc. including fruit oils, castor oil, etc., and various animal fats such as tallow oil. It can be synthesized from natural oils. Similarly, the alkyl group mentioned above is 1, e.g. from an α-olefin. It may be petrochemically synthesized.

Representative examples of useful branched saturated groups include 12-methylstearyl and 12-methylstearyl; -ethylstearyl group. Representative examples of useful branched unsaturated groups Examples include 12-methyloleyl group and 12-ethyloleyl group. non-branching Typical examples of chain saturated groups include lauryl group; stearyl group; tridecyl group; Listyl group (i.e. tetradecyl group): pentadecyl group; hexadecyl group; water Examples include tallow group and docosanyl group. unbranched unsaturated Representative examples of unsubstituted groups include oleyl group, lylyl group, lylyl group, soybean Further examples of monoaralkyl groups include the groups of and tallow, i.e. benzyl moieties and The substituted benzyl moiety is 1, for example, benzyl halides, benzhydryl halides. , trityl halides, α-halo in which the alkyl chain has 1 to 22 carbon atoms -α-phenylalkanes such as 1-halo 1-phenylethane, 1-halo 1 - derived from phenylpropane and 1-halo-1-phenyloctadecane benzyl and substituted benzyl moieties; substituted benzyl moieties such as 0-lm- and p-chlorobenzyl halides, p-methoxybenzyl halides, 0-5- and p-nitrilobenzyl halides and 0-1 iris- and p-alkyl benzyl derived from halides (where the alkyl chain contains 1 to 22 carbon atoms) as well as fused ring benzylic type moieties such as 2-halomethylnaphthalene, 9-halomethylanthracene and 9-halomethylphenanthrene (however, the above halo The group is defined as chloro, bromo or iodo, or a benzylic type moiety It is defined as a group that acts as a leaving group upon nucleophilic attack, and is A nucleophilic attack on a zyl-type moiety involves the nucleophile displacing the leaving group on the benzyl-type moiety. Examples include those derived from

Examples of aryl groups include phenyl groups such as N-alkylanilines and N,N -Dialkylanilines (however.

phenyl group in which the alkyl group contains 1 to 22 carbon atoms; O-, + S- and P-nitrophenyl groups, O-1■- and p-alkylphenyl groups (however, , the alkyl group contains 1 to 22 carbon atoms), 2-13- and 4-halof phenyl group (where halo group is defined as chloro, bromo or iodo), and 2-13- and 4-carboxyphenyl groups and their esters [however, the The alcohol part of ter is an alkyl alcohol (the alkyl group has 1 to 22 carbon atoms) atoms), aryl alcohols such as phenol, or aralkylalk eg derived from benzyl alcohols], fused ring aryls Examples include naphthalene, anthracene and phenanthrene.

The β,γ-unsaturated alkyl groups mentioned above may be selected from a wide range of materials. These compounds The product may be cyclic or acyclic, unsubstituted or containing up to 3 carbon atoms. It may be substituted with an aliphatic group, in which case the aliphatic carbon in the β, γ-unsaturated group The total number is 6 or less. The above β, γ-unsaturated alkyl group is an aromatic ring. The aromatic ring may be substituted, and the aromatic ring is conjugated with the unsaturated bonds of β and γ. Moreover, the β, γ-unsaturated alkyl group is substituted with both an aliphatic group and an aromatic ring. Ru.

Representative examples of cyclic β, γ-unsaturated alkyl groups include 2-cyclohexenyl group and and 2-cyclopentenyl groups. Containing 6 or fewer carbon atoms Typical examples of acyclic β, γ-unsaturated alkyl groups include propargyl group; allyl group; group (i.e. 2-propenyl group): crotyl group (i.e. 2-butenyl group); 2 -Pentenyl group: 2-hexenyl group; 3-methyl-2-butenyl group; 3-methyl -2-pentenyl group: 2,3-dimethyl-2-butenyl group; 1,1-dimethyl- 2-propenyl group; l, 2-dimethylpropenyl group; 2,4-pentagenyl group ; and 2,4-hexagenyl group. Aromatically substituted acyclic compounds Typical examples include cinnamyl group (i.e. 3-phenyl-2-propenyl group) :2-phenyl-2-propenyl group and 3-(4-methoxyphenyl)-2-propenyl group Nine examples include the lopenyl group.

Representative examples of aromatic and aliphatic materials include 3-phenyl -2-cyclohexenyl group; 3-phenyl-2-cyclopentenyl group; 1,1- Dimethyl-3-phenyl-2-propenyl group; 1,1.2-trimethyl-3 -phenyl-2-propenyl group; 2,3-dimethyl-3-phenyl-2-prope Nyl group: 3.

3-dimethyl-2-phenyl-2-propenyl group; and 3-phenyl-2-butene Nyl group is mentioned.

The aforementioned hydroxyalkyl groups are those in which the hydroxyl group is adjacent to a positively charged atom. selected from hydroxy-substituted aliphatic groups that are not substituted with a carbon. This group is 2-6 It has aliphatic carbon atoms. The above alkyl group has the above 2 to 6 aliphatic carbon atoms. Separately from the child, it may be substituted with an aromatic ring. A typical example is 2-hydro xyethyl group (i.e. ethanol group); 3-hydroxypropyl group; 4-hydro Roxypentyl group; 6-hydroxyhexyl group; 2-hydroxypropyl group (all 2-hydroxybutyl group; 2-hydroxypentyl group); Group: 2-hydroxyhexyl group; 2-hydroxycyclohexyl group; 3-hydro Roxycyclohexyl group; 4-hydroxycyclohexyl group; 2-hydroxycyclohexyl group; Clopentyl group; 3-hydroxycyclopentyl group; 2-methyl-2-hydroxy Cypropyl group; 1,1,2-trimethyl-2-hydroxypropyl group; 2-phenylene Nyl-2-hydroxyethyl group; 3-methyl-2-hydroxybutyl group and 5- A hydroxy-2-pentenyl group is mentioned.

Therefore, the above organic cation has the following formula: (wherein, X is nitrogen or phosphorus, Y is sulfur, and R1 is a long-chain alkyl group. and R2, R□ and R4 represent other possible groups as mentioned above). It can be considered that

Preferred organic cations are straight-chain or branched-chain with 12 to 22 carbon atoms. having at least one saturated or unsaturated alkyl group and 1 to 12 carbon atoms Contains at least one linear or branched saturated or unsaturated alkyl group ．． Preferred organic cations also have 1 to 12 carbon atoms in the alkyl moiety. Aralkyl groups having linear or branched saturated or unsaturated alkyl groups are reduced. It may have at least one.

Particularly preferred organic cations are those in which R□, R2, R, and R4 are defined as follows: , i.e. R 1u　　R　　　　　R-methyl methyl long chain alkyl long chain a alkylmethyl methyl benzyl long chain alkylmethyl methyl long chain alkylmethyl Kyl is an ammonium cation that is a long chain alkyl.

As is clear from the foregoing description, the long chain alkyl groups mentioned above can be used in various vegetable oils, e.g. Corn oil, coconut oil, soybean oil, cottonseed oil, castor oil, etc. and various animal fats and oils, e.g. It may be derived from naturally occurring oils including tallow oil. Similarly, The alkyl group may be derived petrochemically from an alpha-olefin, for example. stomach.

The alkyl group contained in the commercially available quaternary compound used in the present invention is hydrogenated tallow fat. Can be produced from acid. As described above. The alkyl group mentioned above has 14 to 20 carbon atoms. It is a mixture of alkyl groups with Based on ioo%.

20-35% of them have 16 carbon atoms and 60-75% have 18 carbon atoms. It has elementary atoms. Salt anions include chlorine anions, bromine anions, and Preferably, it is selected from the group consisting of a mixture of the following, with chlorine anions being more preferable. However, other anions such as acetate anion, hydroxide anion, etc. Present in quaternary ammonium to neutralize quaternary ammonium cations You can stay there.

The amount of organic cation reacted with the smectite-type clay is determined by the specific clay and desired It depends on the degree of hydrophobicity. Typically, the amount of cations will be in the range of about 90 to about 150%, preferably about 100 to about 130% of the on-exchange capacity. Wander. Therefore, for example, when using bentonite, it is necessary to react with the clay. The amount of cations used is about 85 to about 143 milligrams per 100 grams of clay on a 100% active basis. milliequivalents, preferably ranging from about 95 to about 124 milliequivalents.

The anion that usually accompanies the organic cation is typically the reaction product or its recovery ( recOVery). The above anion is Sufficient amounts of chlorine, bromine, and iodine anions to neutralize organic cations. on, hydroxyl anion, nitrite anion and acetate anion may be exemplified. .

Preparation of organic cation salts (i.e., organic cations paired with anions) For example, preparing a quaternary ammonium salt can be accomplished by methods well known to those skilled in the art. In some cases, one skilled in the art will be able to understand the hydrogenation of nitriles (U.S. Pat. No. 2,355,356). (see specification) to prepare a dialkyl secondary amine, and then provide a methyl group. Methyldimethylated by reductive alkylation using formaldehyde as the source An alkyl tertiary amine will be produced. Then, U.S. Patent No. 3,136, No. 819 and the method described in U.S. Pat. No. 2,775,617. Therefore, by adding benzyl chloride or benzyl bromide to the above tertiary amine, Quaternary amine halides can be formed.

As is well known to those skilled in the art, the above reaction with benzyl chloride or bromide into the reaction mixture to obtain a mixture of products in which the benzyl is predominant. of methylene chloride. Then the above mixture is , can be used to prepare organophilic clays without further separation of the components.

Describes organic cation salts, their preparation and their use in the preparation of organophilic clays Representative examples of the numerous patents that apply include U.S. Patent No. 2,966.506; No. 4,081゜496, No. 4,105,578, No. 4,116,866 No. 4,208.218, No. 4,391,637, No. 4,410, No. 364, No. 4,412,018, No. 4,434,075, No. 4,4 No. 34,076, No. 4,450,095 and No. 4,517,112 The details are mentioned.

On the other hand, although not preferred, a gelling agent (galla nt) is also a reaction product of smectite clay, organic cation, and organic anion. The above-mentioned organic anion, which may be a Organic cations that may be intercalated There is a wide range of compounds that can react with organic cations to form ion/organic anion complexes. selected from substances. The molecular weight (Durham molecular weight) of the above organic anion is 3,000 or less, and particularly preferably 1,000 or less. Exactly.

Furthermore, the number of molecules per molecule is small to enable the formation of organic cation/organic anion complexes. Contains at least one acidic moiety. Organic anions have a PKA lower than 11.0 It is preferable that the compound is derived from a compound having the following.

Preferred organic anions are carboxylic acids such as stearic acid, sulfonic acid, and Derived from alkyl sulfates such as lauryl half ester of sulfuric acid.

Particularly organophilic clay gelling agents are used for thickening polyester compositions. A particularly preferred anion when used for this purpose is the stearate anion.

Organic anions (which include mixtures of various organic anions) are organic cations. reacts with clays and smectite-type clays to form organophilic clays; Representative examples of the latter form are alkali metal salts, which may be added to the reaction mixture in salt form. Potassium earth salts, ammonium and organic amines.

Typical salts include hydrogen, lithium, sodium, potassium, magnesium, and calcium. barium, ammonium and organic amines such as ethanolamine, gel Tanolamine, triethanolamine, methyljetanolamine, butyldi Ethanolamine, diethylamine, dimethylamine, triethylamine, dibu It is a salt formed using thylamine, etc. and a mixture thereof.

The amount of organic anion to be reacted with the smectite clay and organic cation is The equivalent ratio of organic cation to organic cation is about 1.70:1.0 to about 28 : 1.0. Preferably within the range of about 3.0:1.0 to about 12:1.0 The amount is sufficient to obtain a milliequivalent ratio. Of course, the most preferred range is the individual Depending on the organic cation and anion and the intended use environment, and It can be determined by experiments as shown in the information.

of the gelling agent comprising the organophilic clay of the present invention selected for the polyester composition. The most preferred range is a ratio of organic cation to organic anion of about 4.0:1.0. to about 6.0:1.0. Explaining the above general principles, Smectai When the clay is bentonite and the amount of organic cation is 102 meq. In this case, an anion such as stearate per 100 g of clay on a 100% active basis is used. About 5 to about 50 meq. of the ion, preferably about 10 to about 30 meq. and react with organic cations.

Organic cations and smectite clays are combined to produce organophilic clays. Representative patents describing suitable organic anions that can be reacted with Generally, U.S. Pat. No. 4,412,018, U.S. Pat. No. 517,112.

The organophilic clay used in the present invention can be produced by any method suitable for producing organophilic clay. It can be manufactured by This typically includes clays and quaternary onium compounds (ammonium compound) and an organic anion, with water if present, and if desired with a small amount of water. and a compatible organic solvent such as isopropyl alcohol, preferably in an amount of 20 to 1 00℃, especially at a temperature in the range of 35 to 77℃, the above organic compound reacts with the clay particles. The resulting material is then filtered, washed and dried to give a primary This can be done by crushing with a grinder. Organophilic clay used in slurry form If so, perform the above drying step.

The milling step can be omitted and any desired additives are subsequently incorporated.

The clay is preferably dispersed in water at a concentration of about 1-8%, preferably 2-7%. , the resulting slurry can optionally be made of non-clay and of the raw clay composition. The slurry is centrifuged to remove impurities, which account for about 10%, and then the slurry is Stir and heat to a temperature ranging from 35 to 77 °C and then add the quaternary ammonium salt. , and the organic cation, if present, in the above-determined amounts stated in milliequivalents. . These are available in the form of a solution in Improper Tools or as a dispersion in water. It is preferable to add the compound in the form of a compound, and then stirring is continued to carry out the reaction. .

In order to enable easier handling, the organophilic clay reaction according to the present invention The total content of organic components in the product is the clay modified or modified with the organic components. Reaction products having an even higher content, preferably less than about 50% by weight of can be used, but the reaction product should not be filtered or dried. and difficult to crush.

According to the invention, bentonite or hexane which has been modified or modified with an organic component Trites have proven particularly convenient.

Organophilic clays are used according to the invention to separate oil or organic phases from suspensions. If used, the organophilic clay is in the form of a powder or an aqueous slurry. It can be used with either. Organoclays in the form of powders can be mixed well with suspensions. It can be any particle size that is compatible. Preferred form is 95% 75 microns It is a powder that meets the specification of being smaller than the When using aqueous slurry , the solids content of this slurry is about 10 to 70% by weight, preferably 30 to 60% by weight. % by weight, even with a solids content of 40-50% by weight. Good and suitable wetting agents are the conventional cationic, anionic or non-ionic It is a surfactant. The slurry contains Stabilizers may be added and are therefore useful in preparing storable slurries. Ru. Known agents for preventing sedimentation of aqueous suspensions are suitable for this purpose; For example, agents known from the coatings and paints sector are suitable. As a suitable example in this regard water-soluble and water-swellable polymers, cellulose and cellulose derivatives, unmodified Alternatively, hydrophilic clay modified with an organic component may be mentioned. The organophilic clay of the present invention Of course, if used as such in powder form for the intended use, crushed parent It is also possible to use mechanical clays in combination with one of the additives mentioned above. each In some cases, the additive is added in an amount selected to achieve the intended additive effect. added.

The organophilic clay used in the present invention is used in the oil-in-water suspension to be separated. It is added in an amount depending on the concentration of the organic phase in the liquid.

Excessive atomized paint (paint, enamel, lacquer, etc.) from the spray room Droplets of paint from the aqueous phase obtained by washing away the verspray When used specifically for the separation of clays and coatings modified with organic components, The ratio with droplets is 0.05:1-0.3:l, especially 0.1:1-0.2:l (weight (quantity ratio) is convenient.

The organophilic clay of the present invention can be used in almost any suspension of organic matter in water. are suitable for separating the organic phase from so-called oil-in-water suspensions.

Typical suspensions include oil spin (oil 5 pin) suspensions and suspensions derived from cutting machines. Examples include conventional suspensions, industrial waste and used lubricating oils, and refrigerants.

A particularly advantageous use is in spraying rooms, especially automotive paint shops, where excess atomized paint products ( separation of oil-in-water suspensions obtained by washing the overspray with water. be. For this application, it has a solids content of 45% and a wetting agent (sulfone-based wetting agent) Suspensions of organophilic clays containing 0.1% lubricant) and 0.5% stabilizer are particularly useful. Good match.

The organophilic clay is preferably in the form of a slurry.

It is convenient to add it to the circulating water in the spray room with vigorous mixing, for example It is carried out with the help of a Tully tube. Coating droplets, so-called overspray liquid, are During the coating process it is passed through water and then coagulated with organophilic clay. The amount added is subject to It depends on the type of coating agent and the amount of coating agent in the aqueous suspension. The pH of circulating water is 3 to 7. Preferably, the pH is adjusted to 3 to 5. This is due to the addition of phenolic substances, especially acetic acid. This can be done by adding. The resulting sludge contains organophilic clay, coating particles and containing water, which can be separated using a decanter, filter, centrifuge or other suitable method. It can be removed from the circulating water by suitable equipment. In this way, the circulating water removes paint impurities. It contains virtually no water and does not increase the viscosity of the circulating water, which has not been used until now. A very important advantage of the use of the present invention compared to unmodified clays is that After drying, the sludge is in the form of non-stick granules.

The invention will be explained in more detail by the following examples.

Each compound used in the examples is defined below: orotan 731 - Dinaphthyl methanesulfonate wetting agent (Rohm & Ba5s Deuts) hland G+1b)I, Frankfurt) 25% aqueous solution Mergal K2S-preservative, N- in combination with heterocyclic compounds Methylol chloracetamide (Riedel de Haem, 5eize ) EA285-stabilizer (manufactured by KRONO5TITAN-G+sbH, Leverk pectolite clay silicone defoamer mixed with cellulosic material 5 RE- (wetting agent manufactured by Vackor) ByK 155.35% concentration - wetting agent (B yk Chemieli, Vesel), low molecular weight acrylate copolymer Byk 181-Wetting agent (Byk Chei+iel!, Wesel), anionic/non- Alkylolammonium salts of ionic polyfunctional polymers Coatex OPIO-wetting agent (Dimed Gmbl) cologne), phosphate ester Nopeo Colorsperse 18g-A- Wetting agent (manufactured by Miinzing Chemie Gmbl (Hei 1bron) n).

Mixtures of special polyglycol esters Clays modified with organic components: BENTONE@34 Bis(hydrogenated tallowalkyl)-dime Bentonite modified with tylammonium chloride Bentone 38 bis(hydrogenated tallowalkyl)-dimethylammonium chloride Pectolite modified with lido Bentone @27 Benzyl-(hydrogenated tallowalkyl)dimethylammonium Hectorite metamorphosed with chloride Last 111■ Mix each of the following ingredients with constant stirring with the help of a high-speed stirrer and separate thoroughly. A homogeneous and stable slurry was obtained.

817.50 g of water 6.75g of Orotane 731.25% concentration 1.50g of 6N 663.00 g of bentone @38 8.25 g of EA285 3.00 g of silicone antifoam agent SRE Kanba Gosei The product was prepared from each component described in Example 1 except that Bentone@38 was replaced with Bentone 034. A slurry was prepared in the same manner as in Example 1. A stable slurry was obtained.

winter garden Example 1 was repeated except that bentone@38 was replaced with bentone@27.

Each of the slurries prepared in Examples 1, 2, and 3 was immersed in trickle water in the following manner. The test was conducted in a simulated spraying system using a spraying system (e.g., spraying water).

A tank with a capacity of 1 i was connected to a circulation pump.

A glass plate 75 cm high was placed vertically in the tank.

Water is circulated from the tank to the top edge of the glass plate and from there a curtain of water flows over the surface. It flowed so that it was formed throughout. Automatic flap with 0.8m+s nozzle Paint was sprayed from a rat jet spray gun onto the water curtain above. (150g of paint sprayed in 20 minutes under 1 pearl pressure).

The organophilic clay-containing slurry was introduced manually into the above water. Top with low speed disperser The paint and slurry described above were dispersed in a tank.

After completing the paint spraying process, the contents of the tank were sieved and then dried. solidify The paint particles are not sticky and dry in the form of granules.

Polyurethane filler, which is generally considered to be extremely difficult to coagulate. (filler) was tested as described above. The organophilic clay of the present invention is extremely useful. It was found to be effective. The results obtained are shown in the table below.

Example 1 Example 2 Example 3 Dispersibility in water Very good Extremely good Good Very good Downward 90% 60% 10 0% upward 10% 40% Appearance after drying Small granules Large granules Using the suspension obtained in Large Granules Example 1, carry out the following procedure using the above method. The coating material was made non-adhesive.

1. Mehnert and Veekll's bluish-gray dry Grinding and baking is filler (PU type) 2. Conventional metallic undercoat paint manufactured by Herberts 3. Herberts 4, a conventional clear coat manufactured by Herberts. solid red 5, Herberts solid red waterborne Top paint 6, metallic gray water-borne top paint manufactured by Herberts In the case of water-borne paints, the pH of the circulating water was 3 with acetic acid. All paints are The adhesive/coagulant ratio of 3=1 was sufficient to make it non-stick.

Kanba Goto Another suspension was prepared by mixing the following ingredients.

54.62% water 0.45% orotane 731.25% concentration 0.10% 6N 44.28% Benton @38 0.55% EA285 100.00% This gave a stable suspension that could be easily dispersed in circulating water. obtained in this way The suspension was tested in large-scale equipment at an auto paint shop and was found to have good detackifying properties. It was found that

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Claims (13)

[Claims] 1. of organophilic clays as agents for the separation of organic phases from oil-in-water suspensions. use. 2. Claim 1, wherein said oil-in-water suspension is an aqueous suspension of a coating or paint. Use as described in Section 1. 3. The organophilic clay described above is a smectite clay modified with an organic component. - The use according to claim 1 or 2. 4. The organophilic clay is bentonite or hexagonal modified with an organic component. The use according to claim 3, which is trite. 5. The organophilic clay is an organic ammonium compound or an organic phosphonium compound. Claims 1 to 3 are clays that have been modified by cation exchange with compounds. Use as described in Section 4. 6. The above in the form of an aqueous slurry having a solids content of 10 to 70% by weight. The use according to claim 5, wherein said organophilic clay is added to an oil-in-water suspension. for. 7.Organophilic with a solids content of 30-60% by weight, especially 40-50% by weight 7. The use according to claim 6, wherein an aqueous slurry of clay is used. 8. Claims 1 to 3, wherein the organophilic clay is used in combination with a wetting agent. Use as described in Section 7. 9. Claim No. 1, wherein the ratio of organophilic clay to oil is 0.05:1 to 0.3:1. Use as described in Section 2. 10. Claim No. 1, wherein the ratio of organophilic clay to oil is 0.1:1 to 0.2:1. Use as described in Section 9. 11. The organophilic clay has two methyl groups and two long chain alkyl groups. The claimed product is a reaction product between an ammonium cation and a smectite clay. Uses according to ranges 1 to 3 and 6 to 10. 12. The organophilic clay has two methyl groups, one benzyl group, and one long The reaction between an ammonium cation having a chain alkyl group and a smectite clay The use according to claims 1 to 3 and 6 to 10, which is a reaction product. 13. The organophilic clay has one methyl group, one benzyl group, and two long The reaction between an ammonium cation having a chain alkyl group and a smectite clay The use according to claims 1 to 3 and 6 to 10, which is a reaction product.